/*
 * Copyright [2013-2021], Alibaba Group Holding Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.polardbx.executor.operator.scan.impl;

import com.alibaba.polardbx.executor.chunk.Block;
import com.alibaba.polardbx.executor.chunk.columnar.BlockLoader;
import com.alibaba.polardbx.executor.operator.scan.CacheReader;
import com.alibaba.polardbx.executor.operator.scan.ColumnReader;
import com.alibaba.polardbx.optimizer.core.datatype.DataType;

import java.io.IOException;

public class DummyBlockLoader implements BlockLoader {

    private final int startPosition;
    private final int positionCount;

    public DummyBlockLoader(int startPosition, int positionCount) {
        this.startPosition = startPosition;
        this.positionCount = positionCount;
    }

    @Override
    public Block load(DataType dataType, int[] selection, int selSize) throws IOException {
        return null;
    }

    @Override
    public ColumnReader getColumnReader() {
        return null;
    }

    @Override
    public CacheReader<Block> getCacheReader() {
        return null;
    }

    @Override
    public int startPosition() {
        return startPosition;
    }

    @Override
    public int positionCount() {
        return positionCount;
    }
}
